diff --git a/app/models/mailer.rb b/app/models/mailer.rb
index e5ede6285..a303d92bf 100644
--- a/app/models/mailer.rb
+++ b/app/models/mailer.rb
@@ -22,7 +22,7 @@ class Mailer < ActionMailer::Base
   helper :custom_fields
 
   include Redmine::I18n
-
+  include CoursesHelper
   def self.default_url_options
     { :host => Setting.host_name, :protocol => Setting.protocol }
   end
@@ -44,6 +44,16 @@ class Mailer < ActionMailer::Base
              when :Bid
                respond_url(journals_for_message.jour, anchor: "word_li_#{journals_for_message.id}")
              when :Project
+               if journals_for_message.jour.project_type == 1
+                 project =  journals_for_message.jour
+                 @teachers = searchTeacherAndAssistant journals_for_message.jour
+                 @recipients ||= []
+                 @teachers.each do |teacher|
+                    @recipients << teacher
+                  end
+                 mail :to => @recipients,
+                      :subject => "您的课程#{journals_for_message.jour.name}中有了新的留言"
+               end
                project_feedback_url(journals_for_message.jour, anchor: "word_li_#{journals_for_message.id}")
              when :Contest
                show_contest_contest_url(journals_for_message.jour, anchor: "word_li_#{journals_for_message.id}")